MCQ
Portion of gene which is transcribed but not translated is:
- AExon
- BIntron
- CCistron
- DCodon
Explanation:
The process of RNA synthesis from DNA is called transcription. During transcription, the complete gene is copied into a pre-mRNA along with exons and introns.
The exons are the coding regions and the introns are the non-coding regions. The process of RNA splicing converts the pre-mRNA to mRNA and involves the removal of introns and the joining of exons.
This results in the formation of the mature mRNA that is translated into a protein.
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$(1)$ medical termination of pregnancy $(MTP)$ during first trimester is generally safe
$(2)$ generally chances of conception are nil until mother breast feeds the infant upto two years
$(3)$ intrauterine devices like copper $T$ are effective contraceptives
$(4)$ contraception pills may be taken upto one week after coitus to prevent conception.
Which two of the above statements are correct?